JP4833796B2 - Volleyball block body - Google Patents

Description

  The present invention relates to a volleyball block body used for practice such as volleyball attack or practice of picking up a blocked ball.

  In the past, volleyball blocks have been practiced using a rectangular frame with a net or a chair back. These members are supported by, for example, a volleyball coach so that the net part and the back part of the chair protrude slightly above the net of the volleyball, and the players place the ball on the back part of the net or chair. He was practicing handling balls that hit and bounced off the back of the net or chair.

  Such a block member has the following drawbacks.

(1) the block member, palm players, compared to the hardness of such arms, so hard, can not practice the speed of the bounce of the ball is suited to fast over-assistant engineer, actual aspects.

  (2) When the ball hits the corner of the block member, the ball flies in a direction completely different from the actual battle, and practice according to the actual situation cannot be performed.

  (3) Since the block member is supported by hand, the supporting person gets tired.

  As what solves the said fault, what was formed as a block mat for volleyball is known, for example (patent document 1). As shown in FIGS. 7 and 8, the block mat 100 has left and right side surfaces and an upper surface continuously connected by fasteners 111, and a front surface 112 and a rear surface 114 provided with air vent holes are provided with a partition wall 115 at an appropriate interval. A box-shaped member A made of a fabric such as canvas, which is attached to a bag body 117 having a lower portion opened to the back surface 114 and provided with an appropriate interval at the lower edge, and an upper portion; Is inserted into and attached to the bag body 117, and is combined with a support member B provided with a horizontal rail slightly below the lower edge of the bag body 117. In the implementation, the foamed polystyrene plate 119 and A support member B is inserted into a bag body 117 of a box-shaped member A packed with a waste cloth 120 or the like and used.

In addition, as another volleyball block mat, the right and left side surfaces and the upper surface are continuously connected by fasteners, and the back surface is appropriately separated by a partition material and separated into a space part partitioned by the partition material, A top member made of foamed polystyrene foam with rounded top and front / rear / right / left sides is mounted so that it is located on the front side, and the remaining space is made from a plurality of plate-like foamed polystyrene rolls. The thing comprised from the box-shaped member filled with the lower member which becomes and the lightweight support member which consists of a hard polyethylene pipe is known (patent document 2).
Utility Model Registration No. 3061872 Utility Model Registration No. 3104000

  In the thing shown in patent document 1, since the waste is filled in the front part which a ball | bowl hits in the space part of a partition, the direction of rebounding differs from an actual battle. In addition, there is a problem that the way of rebounding varies depending on the state of filling of the waste, so that the waste absorbs moisture and becomes heavy.

  Even in the case shown in Patent Document 2, since the surface has a semi-cylindrical shape, the strength and direction of the rebound will differ from the actual battle when the ball hits the semi-cylindrical top and when it hits the semi-cylindrical valley. There is a problem that the difference from the actual practice is large.

  In the present invention, in order to eliminate the above-mentioned problems of the prior art, the rebound strength when an actual volleyball is blocked by a player's hand was measured, and various types of block bodies close to this measured value were tested. As a result, a material with relatively excellent resilience and a material with excellent shock absorption are layered, and one is used as a surface layer against which volleyball hits, and the other is used on the back side. In addition, we found a repulsive resemblance to actual practice by arranging a base plate on the back side.

Specifically, the invention of claim 1 is a volleyball block body in which the block body is disposed on the rear side of the first layer made of a high resilience member and has cushioning properties. a second layer of shock-absorbing member is disposed on the rear side of the second layer, Ri Do from the third layer of the base plate, said first layer comprises a rebound of 100 mm to 200 mm, said Two layers have a rebound property of 150 mm or less lower than the rebound property of the first layer, the third layer has a rebound property of 220 mm to 320 mm, and the first layer, the second layer, and the third layer The rebound property at the time of laminating | stacking is 100 mm-220 mm, The surface of a 1st layer, a 2nd layer, and a 3rd layer consists of a flat surface, respectively, It is characterized by being overlaid mutually .

According to a second aspect of the present invention, in the volleyball block body according to the first aspect, the block body has a rectangular shape, and the thickness of each layer has a relationship of second layer ≧ first layer> third layer. It is characterized by.

According to a third aspect of the present invention, in the volleyball block body according to the first or second aspect , the block body is covered with a cover, and the surface portion of the cover is formed in different colors at the central portion and the peripheral portion. It is characterized by being.

According to a fourth aspect of the present invention, in the volleyball block body according to the third aspect , an attachment portion for detachably attaching a frame for supporting the block body is provided on the back surface of the cover.

According to a fifth aspect of the present invention, in the volleyball block body according to the fourth aspect, the frame has two struts extending downward from positions corresponding to both side surfaces of the back surface of the cover, and an upper end portion of the struts. And two horizontal bars that are connected laterally at the middle part, and the upper part of the support and the horizontal bar form a rectangular shape corresponding to the rectangular shape of the block body so as to support the block body It is characterized by becoming.

The invention of claim 6 is the block of volleyball of claim 5, further comprising a grip portion to the lower portion of the strut, characterized in that the shock-absorbing member is provided on said clip portion.

According to a seventh aspect of the present invention, in the volleyball block body according to any one of the third to sixth aspects, the lower end surface of the second layer is formed to be recessed from the lower end surface of the first layer. The upper end portion of the net is positioned on the first layer, the depression, and the frame, and the upper end portion of the net can be disposed across the upper end portion.

According to the first aspect of the present invention, an actual volleyball rebounding state is obtained, which is suitable for practice of attack and practice of picking up a blocked ball. In addition, it is possible to stably obtain a product that is close to the actual volleyball rebound state with good productivity, and to eliminate the variation in the rebound due to the position where the ball hits.

According to the invention of claim 2, the first layer to the third layer can exhibit respective characteristics.

According to the invention of claim 3 , since the central portion and the peripheral portion of the surface portion have different colors, it is possible to effectively practice applying to the central portion and applying to the peripheral portion.

According to invention of Claim 4 , a block body can be stably hold | maintained reliably.

According to invention of Claim 5, a block body can be hold | maintained reliably reliably.

According to the invention of claim 6 , it is possible to reduce the impact of a person when the ball hits the block body.

According to invention of Claim 7 , the burden of the person with a block body can be reduced.

  Generally, when a spiked ball hits a person's hand, the person's hand is pushed a little later by the impact of the spike. Even if it is pushed later, the power of the person who blocked it creates a force that tries to bounce off that force. Depending on the strength of each force, the ball bounces sharply, returns slowly, or flies after impact and flies. That is, when the ball hits the hand, there is a repulsive force / absorbing force relationship.

  Based on this, in the present invention, the state in which the person actually spikes and the person receives it by hand is reproduced, and the spike force and the block force are represented by numerical values. As a volleyball, No. 5 ball having a diameter of 210 mm, a weight of 270 g, and an internal pressure of 0.32 hpa was used. As a result of investigating the average spike speed of the attacker using this volleyball, the average speed was 60 km / h. For this purpose, a volleyball was applied to a human hand at this speed, and the bounce distance was actually measured and repeated 100 times. As a result, the average value of the rebound distance was 60.45 cm. From this measurement result, the inventor set the ideal rebound distance at the time of block to 60 cm. And as shown in FIG. 1, the various types were tested about the block body 10 in which the rebound distance becomes 60 cm. As a result, in the present invention, as a block body capable of obtaining the above rebound distance, as shown in FIG. 3, the first layer 11 having high resilience is provided on the surface to which the ball B hits, and the shock absorption disposed on the rear side. When the block body 10 is formed of the second layer 12 having the property and the base plate 13 disposed on the rear side, it is found that the rebound distance is approximate to a block that is actually received by a human hand. It has also been found that the same result as described above can be obtained even if the first layer and the second layer are reversed.

  The first layer 11 is used to reproduce the rebound distance when the ball B hits the hand. The first layer 11 is a material having a strong repulsive force and having wear resistance when the ball B hits. Is preferred. Examples thereof include foamed resin materials such as foamed polyethylene and foamed polyurethane, which have high resilience, leather materials such as natural leather and synthetic leather, and rubber materials such as elastomer.

  In addition, since the ball B rebounds as much as when the ball B hits the wall only in the first layer 11, the second layer 12 reduces the resilience of the first layer 11, and is a cushioning material, that is, shock absorbing. It is preferable to use a material having a characteristic. For example, low resilience foamed resin material such as urethane sponge, silicone gel, hollow body, air cap and the like.

  Since the first layer 11 and the second layer 12 are rich in flexibility and have low shape maintainability, when only the first layer 11 and the second layer 12 hit the ball B, the hit points will be depressed, As a result, the resilience is insufficient. In this case, it is preferable to use a hard plate material as the third layer 13 in order to reinforce the shape maintaining property and reduce the depression of the block body 10 to maintain the resilience. In particular, it is preferable to use a material that has a strength that rebounds strongly when the ball B hits it, but when it hits the ball, it slightly bends to return to its original shape, that is, strength and a little flexibility. The material provided with is more preferable. For example, a foamed resin plate material such as foamed polypropylene, a resin plate material, a wood plate material, a metal plate material, and the like.

  The relationship among the thickness t1 of the first layer 11, the thickness t2 of the second layer 12, and the thickness t3 of the third layer 13 is preferably as follows. Since the second layer 12 is required to have a shock absorbing property, the thickness t2 is provided to be the thickest, and the third layer 13 can be rebounded strongly and is preferably lightweight. The thickness t3 may be the thinnest, and the thickness t1 of the first layer 11 is required to have high resilience and wear resistance when the ball B directly hits, so the thickness of the second layer 12 It is preferably thinner than t2 and thicker than the thickness t3 of the third layer 13. As a result, the thicknesses of the first layer 11, the second layer 12, and the third layer 13 are preferably in a thickness relationship of t2 ≧ t1> t3.

  As described above, the characteristics for satisfying the respective functions of the first layer 11, the second layer 12, and the third layer 13 were investigated. Among them, in particular, since the rebound characteristic when hitting the ball B greatly affects, in the present invention, the rebound characteristic is regarded as the rebound property for the first layer 11, the second layer 12, and the third layer 13, respectively. The experiment was investigated.

  The rebound property of the block body 10 used in the present invention will be described in detail. The block body 10 was wrapped with a cover 15 and combined with the frame 16. The block body 10 and the cover 15 will be described in detail later. In this state, as shown in FIG. 2, with the surface 15a of the cover 15 facing upward, with the frame 16 in contact with the ground, the block body is laid down in combination with the frame. Then, the volleyball B was naturally dropped from 2 m above the surface 15a of the cover 15, and the rebound distance at that time was measured. This rebound distance was defined as the rebound property in the present invention. As in the case of FIG. 1, Volleyball B used was a No. 5 ball having a diameter of 210 mm, a weight of 270 g, and an internal pressure of 0.32 hpa.

  As described above, in order for the first layer 11, the second layer 12, and the third layer 13 to satisfy the respective functions, the first layer 11 has a rebound property of 100 mm to 200 mm, particularly 115 mm to 180 mm, The second layer 12 is lower than the rebound property of the first layer 11 and has a rebound property of 150 mm or less, particularly 130 mm or less, the third layer 13 has a rebound property of 220 mm to 320 mm, particularly 240 mm to 300 mm, and the first layer 11, The rebound property at the time of laminating | stacking the 2nd layer 12 and the 3rd layer 13 became a preferable result that it is 100 mm-220 mm, especially 125 mm-185 mm. In addition, the rebound property when the first layer 11 and the second layer 12 were laminated was 90 mm to 170 mm, particularly 110 mm to 150 mm.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
The first embodiment will be described with reference to FIGS. FIG. 3 shows a block body 10 used when practicing a volleyball block or attack. The block body 10 has a substantially rectangular shape, and a first layer 11 made of a highly repulsive member on the surface and a second layer made of a shock absorbing member disposed on the rear side of the first layer 11 and having cushioning properties. It consists of the layer 12 and the 3rd layer 13 which is arrange | positioned on the back side of the 2nd layer 12, and consists of a base board material excellent in the shape maintenance property.

  The surface of the first layer 11 is a flat surface, and is formed so that there is no variation in rebound when the volleyball B hits. A lower end surface 12 a of the second layer 12 and a lower end surface 13 a of the third layer 13 are formed as depressions 14 that are recessed from the lower end surface 11 a of the first layer 11.

  As shown in FIGS. 4 and 5, the block body 10 is covered with a replaceable cover 15. Although illustration is omitted, the cover 15 can be opened and closed with a fastener, Velcro (registered trademark) or the like, and is formed so that the block body 10 can be taken in and out. The surface 15a of the cover 15 is formed in a flat surface in accordance with the surface of the first layer 11, and the surface 15a is divided into three regions in the lateral direction at the central portion 15aa and its both sides 15ab as shown in FIG. The central portion 15aa and the peripheral portion 15ab are formed in different colors. As a result, it is possible to effectively practice practicing to intentionally attack the central portion 15aa or attack the peripheral portion 15ab. The formation of this section is not limited to three sections, but may be two sections on the left and right, or more than three sections. Moreover, it is good also as a 3 division, for example in an up-down direction. Further, the left and right sections and the upper and lower sections may be combined, for example, three sections each for a total of nine sections.

  As shown in FIG. 5, a mounting portion 20 that can be assembled and separated from the frame 16 is provided on the back surface 15 b of the cover 15. Details of the mounting portion 20 will be described later. The frame 16 includes two support columns 17 extending downward from positions corresponding to both side surfaces of the back surface 15b of the cover 15 (that is, positions corresponding to both side surfaces of the block body 10), and an upper end portion ( There are two horizontal bars 18 that are connected horizontally at a position corresponding to the upper end portion of the block body 10 and an intermediate portion (a position corresponding to the lower end portion of the block body 10). The upper portion 17a of the support column 17 and the horizontal bar 18 form a rectangular shape substantially corresponding to the rectangular shape of the block body 10, and support the block body. A grip portion 19 made of an impact absorbing material such as a rubber material is placed on the lower end portion of the lower portion 17b of the support column 17 so as to reduce impact, vibration, etc. applied to a person's palm when blocking.

As shown in FIG. 5, the attachment portion 20 is provided with a cloth sheet 21 that covers the upper portion 17 a of the support column 17 on both sides of the back surface 15 b of the cover 15. The outer end portion of the cloth sheet 21 is attached to both sides of the back surface 15 of the cover 15 by sewing or the like, and a joint portion such as Velcro (registered trademark) is provided on the inner end portion of the fabric sheet 21, and the joint portion is Further, it is possible to contact and separate from the bonded portion 22 provided on the back surface 15b. On the upper and lower end portions of the back surface 15 of the cover 15, cloth sheets 23 similar to the upper portion 17 a of the support column 17 are provided at portions corresponding to the horizontal bars 18. Although this detailed structure is omitted, for example, the cloth sheet 23 is composed of two members in the vertical direction, and these two upper and lower members have a structure that can be joined and separated by a hook or the like.

  Next, the use state of the block body 10 will be described. In use, the frame body 16 is assembled to the cover 15 while the block body 10 is housed in the cover 15. And as shown in FIG. 4, the lower end surface 11a of the 1st layer 11 is located in the one side of the net | network N so that the hollow 14 may be located in the upper end part of the net | network N, and the lower end surface 12a of the 2nd layer 12 And the third lower end surface 13a is positioned above the upper end of the net N, and the column 17 is positioned on the other side of the net N, that is, the first layer 11, the depression 14 and the column 17 It arrange | positions in the state straddling the upper end part. In this state, a person such as a coach has the grip portion 19 of the support column 17. By being held at the upper end of the net N in this way, the burden when a person supports the block body 10 is reduced.

  In the above embodiment, the recess 14 is formed by the second layer and the third layer. However, the recess is formed only by the second layer, and the third layer is formed on the same lower end surface as the first layer. May be.

Example 1
About the block body 10 of the structure of Embodiment 1 in connection with this invention, the bounce distance at the time of a block was tested. The first layer is 20 mm thick and 135 mm rebound polyethylene foam, the second layer is 25 mm thick and 115 mm rebound urethane sponge, the third layer is 3 mm thick and 270 mm. Polypropylene foam made of rebound was used. The rebound property when the first layer and the second layer were combined was 130 mm, and the rebound property when the first layer, the second layer, and the third layer were combined was 145 mm.

  As shown in FIG. 1, a volleyball of No. 5 ball having a diameter of 210 mm, a weight of 270 g, and an internal pressure of 0.32 hpa is applied to the block body 10 at a speed of 60 km / h and the rebound distance is measured 100 times. did. As a result, the average was 60.22 cm. The block body 10 close to the target 60 cm was obtained.

Example 2
In contrast to Example 1, the thickness of the first layer was 25 mm, and a polyethylene foam having a rebound property of 145 mm was obtained. This block 10 was tested in the same manner as in Example 1. As a result, the average was 60.55 cm. The block body 10 close to the target 60 cm was obtained.

Example 3
In contrast to Example 1, the thickness of the second layer was 35 mm, and a urethane sponge having a rebound property of 100 mm was obtained. This block 10 was tested in the same manner as in Example 1. As a result, the average was 59.85 cm. The block body 10 close to the target 60 cm was obtained.

Comparative Example 1
The thing of the structure similar to the content shown in patent document 1 was created. Specifically, the interior of the cloth bag body is partitioned into three spaces by a partition material, and three foamed polystyrene plates are stacked in each space, and two to three sheets of waste are stacked above this foamed polystyrene plate. In addition, the structure is supported by a PVC pipe frame. As the partition material, the front surface and the back surface were sewn by sewing so that the foamed polystyrene did not move to another space. The thickness of the three stacked polystyrene sheets was 75 mm. The size of the bag was 500 mm in length and 700 mm in width, and the difference in distance between the top and bottom of the surface was 10 mm.

  And the fall test of the volleyball as shown in FIG. 2 was done like Examples 1-3. As a result, the rebound property was a peak part: 390 mm, a valley part: 320 mm, and a part between them: 350 mm. As can be seen from this result, the rebound property was clearly too high. When the test for measuring the rebound distance as shown in FIG. 1 is performed with this rebound property, it is clear that the result of rebounding greatly exceeds 60 cm, and the test shown in FIG. 1 was not performed. In addition, it became clear that there was a large variation depending on the position where the volleyball hits, and the difference from the actual block was so great that it could not be used in practice.

  As described above, the block body according to the present invention can be used for exercises such as volleyball blocks and attacks.

It is a figure explaining the test state which measures the rebound distance of a volleyball. It is a figure explaining the test state which measures the rebound property of a volleyball. The perspective view of a block body in connection with Embodiment 1 is shown. It is a figure explaining a use condition using the block body of Embodiment 1. FIG. The rear perspective view explaining the assembly | attachment state of a cover and a frame in connection with Embodiment 1 is shown. The surface perspective view of the cover according to the first embodiment. Sectional drawing of the block body and cover of a prior art is shown. FIG. 8 shows a side view of FIG. 7.

B Volleyball 10 Block body 11 1st layer 12 2nd layer 13 3rd layer 14 Indentation 15 Cover 16 Frame 17 Strut 18 Horizontal bar 19 Grip part 20 Attachment part

Claims (7)

In the volleyball block body,
A first layer in which the block body is made of a highly repulsive member;
A second layer comprising an impact absorbing member disposed on the rear side of the first layer and having cushioning properties;
Disposed on the rear side of the second layer, Ri Do from the third layer of the base plate material,
The first layer has a rebound property of 100 mm to 200 mm,
The second layer has a rebound property of 150 mm or less lower than the rebound property of the first layer,
The third layer has a rebound property of 220 mm to 320 mm,
The rebound property when the first layer, the second layer, and the third layer are laminated is 100 mm to 220 mm,
The volleyball block body is characterized in that the surfaces of the first layer, the second layer, and the third layer are flat surfaces and are superposed on each other . The volleyball block body according to claim 1,
The block body has a rectangular shape, and the thickness of each layer is in the relationship of second layer ≧ first layer> third layer. In the volleyball block body according to claim 1 or 2 ,
A volleyball block body, wherein the block body is covered with a cover, and a surface portion of the cover is formed in a different color at a central portion and a peripheral portion. The volleyball block body according to claim 3 ,
A volleyball block body, wherein a mounting portion for detachably attaching a frame for supporting the block body is provided on the back surface of the cover. The volleyball block body according to claim 4,
The frame has two support columns extending downward from positions corresponding to both side surfaces of the back surface of the cover, and two horizontal bars respectively connecting horizontally at an upper end portion and an intermediate portion of the support columns, A volleyball block body characterized in that a rectangular shape corresponding to a rectangular shape of the block body is formed by an upper portion of the support column and the horizontal bar so as to support the block body. The volleyball block body according to claim 5 ,
Comprising a grip portion to the lower portion of the pillar, block of volleyball, characterized in that the shock-absorbing member is provided on said clip portion. The volleyball block body according to any one of claims 3 to 6 ,
The lower end surface of the second layer is formed to be recessed from the lower end surface of the first layer, and the upper end portion of the net is located in the recess, and the upper end of the net is formed by the first layer, the recess and the frame. A volleyball block body that can be placed across different parts.

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